Synthesis and Magnetic Properties of Maghemite (γ-Fe(2)O(3)) Short-Nanotubes

We report a rational synthesis of maghemite (γ-Fe(2)O(3)) short-nanotubes (SNTs) by a convenient hydrothermal method and subsequent annealing process. The structure, shape, and magnetic properties of the SNTs were investigated. Room-temperature and low-temperature magnetic measurements show that the...

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Detalles Bibliográficos
Autores principales: Wu, W, Xiao, XH, Zhang, SF, Peng, TC, Zhou, J, Ren, F, Jiang, CZ
Formato: Texto
Lenguaje:English
Publicado: Springer 2010
Materias:
Nano Express
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2920399/
https://www.ncbi.nlm.nih.gov/pubmed/20730115
http://dx.doi.org/10.1007/s11671-010-9664-4
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author Wu, W
Xiao, XH
Zhang, SF
Peng, TC
Zhou, J
Ren, F
Jiang, CZ
author_facet Wu, W
Xiao, XH
Zhang, SF
Peng, TC
Zhou, J
Ren, F
Jiang, CZ
author_sort Wu, W
collection PubMed
description We report a rational synthesis of maghemite (γ-Fe(2)O(3)) short-nanotubes (SNTs) by a convenient hydrothermal method and subsequent annealing process. The structure, shape, and magnetic properties of the SNTs were investigated. Room-temperature and low-temperature magnetic measurements show that the as-fabricated γ-Fe(2)O(3) SNTs are ferromagnetic, and its coercivity is nonzero when the temperature above blocking temperature (T(B)). The hysteresis loop was operated to show that the magnetic properties of γ-Fe(2)O(3) SNTs are strongly influenced by the morphology of the crystal. The unique magnetic behaviors were interpreted by the competition of the demagnetization energy of quasi-one-dimensional nanostructures and the magnetocrystalline anisotropy energy of particles in SNTs.
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spelling pubmed-29203992010-08-20 Synthesis and Magnetic Properties of Maghemite (γ-Fe(2)O(3)) Short-Nanotubes Wu, W Xiao, XH Zhang, SF Peng, TC Zhou, J Ren, F Jiang, CZ Nanoscale Res Lett Nano Express We report a rational synthesis of maghemite (γ-Fe(2)O(3)) short-nanotubes (SNTs) by a convenient hydrothermal method and subsequent annealing process. The structure, shape, and magnetic properties of the SNTs were investigated. Room-temperature and low-temperature magnetic measurements show that the as-fabricated γ-Fe(2)O(3) SNTs are ferromagnetic, and its coercivity is nonzero when the temperature above blocking temperature (T(B)). The hysteresis loop was operated to show that the magnetic properties of γ-Fe(2)O(3) SNTs are strongly influenced by the morphology of the crystal. The unique magnetic behaviors were interpreted by the competition of the demagnetization energy of quasi-one-dimensional nanostructures and the magnetocrystalline anisotropy energy of particles in SNTs. Springer 2010-06-17 /pmc/articles/PMC2920399/ /pubmed/20730115 http://dx.doi.org/10.1007/s11671-010-9664-4 Text en Copyright © 2010 The Author(s) https://creativecommons.org/licenses/by-nc/4.0/ This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.
spellingShingle Nano Express
Wu, W
Xiao, XH
Zhang, SF
Peng, TC
Zhou, J
Ren, F
Jiang, CZ
Synthesis and Magnetic Properties of Maghemite (γ-Fe(2)O(3)) Short-Nanotubes
title Synthesis and Magnetic Properties of Maghemite (γ-Fe(2)O(3)) Short-Nanotubes
title_full Synthesis and Magnetic Properties of Maghemite (γ-Fe(2)O(3)) Short-Nanotubes
title_fullStr Synthesis and Magnetic Properties of Maghemite (γ-Fe(2)O(3)) Short-Nanotubes
title_full_unstemmed Synthesis and Magnetic Properties of Maghemite (γ-Fe(2)O(3)) Short-Nanotubes
title_short Synthesis and Magnetic Properties of Maghemite (γ-Fe(2)O(3)) Short-Nanotubes
title_sort synthesis and magnetic properties of maghemite (γ-fe(2)o(3)) short-nanotubes
topic Nano Express
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2920399/
https://www.ncbi.nlm.nih.gov/pubmed/20730115
http://dx.doi.org/10.1007/s11671-010-9664-4
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